Native peoples Prior to the arrival of Europeans in the early 17th century, the
Lenape, an
Indian tribe also known as the Delaware Indians, lived in the village of
Shackamaxon in present-day Philadelphia and the surrounding area. The Lenape historically lived along the
Delaware River watershed, western
Long Island, and the
Lower Hudson Valley. Most Lenape were pushed out of the region during the 18th century as the original
Thirteen Colonies expanded, which was further exacerbated by losses from intertribal conflicts. In 1648, the Dutch built
Fort Beversreede on the west bank of the Delaware, south of the
Schuylkill River near the present-day
Eastwick section of Philadelphia, to reassert their dominion over the area. The
Swedes responded by building
Fort Nya Korsholm, or New
Korsholm, named after a town in Finland with a Swedish majority. In 1655, a
Dutch military campaign led by New Netherland Director-General
Peter Stuyvesant took control of the Swedish colony, ending its claim to independence. The Swedish and
Finnish settlers continued to have their own
militia, religion, and court, and to enjoy substantial autonomy under the Dutch. An English fleet captured the New Netherland colony in 1664, though the situation did not change substantially until 1682, when the area was included in
William Penn's charter for Pennsylvania. In 1681, in partial repayment of a debt,
Charles II of England granted Penn a
charter for what would become the
Pennsylvania colony. Despite the royal charter, Penn bought the land from the local
Lenape in an effort to establish good terms with the Native Americans and ensure peace for the colony. Penn made a
treaty of friendship with Lenape chief
Tammany under an elm tree at
Shackamaxon, in what is now the city's
Fishtown neighborhood. Penn named the city Philadelphia, which is Greek for 'brotherly love', derived from the
Ancient Greek terms ('beloved, dear') and ('brother, brotherly'). There were a number of cities named
Philadelphia () in the
Eastern Mediterranean during the Greek and Roman periods, including modern
Alaşehir, mentioned as the site of an early Christian congregation in the
Book of Revelation. As a
Quaker, Penn had experienced
religious persecution and wanted his colony to be a place where anyone could worship freely. This tolerance, which exceeded that of other colonies, led to better relations with the local native tribes and fostered Philadelphia's rapid growth into America's most important city. Penn planned a city on the Delaware River to serve as a port and place for government. Hoping that Philadelphia would become more like an English rural town instead of a city, Penn laid out roads on a
grid plan to keep houses and businesses spread far apart with areas for gardens and
orchards. The city's inhabitants did not follow Penn's plans, however, and instead crowded the present-day
Port of Philadelphia on the Delaware River and subdivided and resold their lots. Before Penn left Philadelphia for the final time, he issued the Charter of 1701 establishing it as a city. Though poor at first, Philadelphia became an important trading center with tolerable living conditions by the 1750s.
Benjamin Franklin, a leading citizen, helped improve city services and founded new ones that were among the first in the nation, including a
fire company,
library, and
hospital. A number of
philosophical societies were formed, which were centers of the city's intellectual life, including the Philadelphia Society for Promoting Agriculture (1785), the Pennsylvania Society for the Encouragement of Manufactures and the Useful Arts (1787), the
Academy of Natural Sciences (1812), and the
Franklin Institute (1824). These societies developed and financed new industries that attracted skilled and knowledgeable immigrants from Europe.
American Revolution presenting their draft of the
Declaration of Independence in
Independence Hall on June 28, 1776, depicted in
an 1818 painting by
John Trumbull; historian
Joseph Ellis called the Declaration "the most potent and consequential words in American history." on
Market Street served as the presidential mansion for the nation's first two presidents,
George Washington and
John Adams, from 1790 to 1800 prior to the completion of the
White House and the development of Washington, D.C. as the nation's new capital. on
Chestnut Street between 5th and 6th streets, where the
Declaration of Independence was signed and the
Constitution was ratified, on July 4, 1776, and June 21, 1788, respectively Philadelphia's importance and central location in the colonies made it a natural center for
America's revolutionaries. By the 1750s, Philadelphia surpassed
Boston as the largest city and busiest port in
British America, and the second-largest city in the entire
British Empire after London. In 1774, as resentment of the
British government's policies towards the colonies and support for independence began burgeoning in the colonies, Philadelphia hosted the
First Continental Congress at
Carpenters' Hall, and 12 of the original 13 colonies sent delegates to the Congress. From 1775 to 1781, Philadelphia hosted the
Second Continental Congress, whose 56 delegates unanimously adopted the
Declaration of Independence inside what was then called Pennsylvania State House and was later renamed
Independence Hall. Written predominantly by
Thomas Jefferson from his second-floor apartment on
Market Street within walking distance of Independence Hall, the Declaration has been described by
Pulitzer Prize-winning historian
Joseph Ellis as "the most potent and consequential words in American history," Two Revolutionary War battles, the
Siege of Fort Mifflin, fought between September 26 and November 16, 1777, and the
Battle of Germantown, fought on October 4, 1777, took place within Philadelphia's city limits. In Philadelphia, the Second Continental Congress adopted the
Articles of Confederation on November 15, 1777. Independence Hall in Philadelphia was the meeting place for the
Constitutional Convention, which ratified the
Constitution on September 17, 1787, which is now the longest-standing codified national constitution. Philadelphia served as capital of the United States for most of the colonial and early post-colonial period, including for a decade, from 1790 to 1800, while Washington, D.C. was being constructed and prepared to serve as the new national capital, and
on five prior occasions between 1776 and 1790. In 1793, the largest
yellow fever epidemic in U.S. history killed approximately 4,000 to 5,000 people in Philadelphia, or about ten percent of the city's population at the time. The capital of the United States was moved to Washington, D.C. in 1800 upon completion of the
White House and
U.S. Capitol buildings. The state capital was moved from Philadelphia to
Lancaster in 1799, then ultimately to
Harrisburg in 1812. Philadelphia remained the nation's largest city until the late 18th century. It also was the nation's financial and cultural center until ultimately being eclipsed in total population by
New York City in 1790. In 1816, the city's free Black community founded the
African Methodist Episcopal Church, the first independent Black denomination in the country, and the first Black
Episcopal Church. The free Black community also established many schools for its children with the help of
Quakers. Large-scale construction projects for new roads,
canals, and railroads made Philadelphia the first major
industrial city in the United States.
19th century at
Memorial Hall in
Fairmount Park in 1876, the first
world fair held in the U.S. on the centennial anniversary of the nation's founding Throughout the 19th century, Philadelphia hosted a variety of industries and businesses; the largest was the
textile industry. Major corporations in the 19th and early 20th centuries included the
Baldwin Locomotive Works,
William Cramp & Sons Shipbuilding Company, and the
Pennsylvania Railroad. Established in 1870, the Philadelphia Conveyancers' Association was chartered by the state in 1871. Along with the U.S. Centennial in 1876, the city's industry was celebrated in the
Centennial Exposition, the first official
World's fair in the U.S. Immigrants, mostly from Ireland and Germany, settled in Philadelphia and the surrounding districts. These immigrants were largely responsible for the
first general strike in North America in 1835, in which workers in the city won the ten-hour workday. The city was a destination for thousands of Irish immigrants fleeing the
Great Famine in the 1840s; housing for them was developed south of
South Street and later occupied by succeeding immigrants. They established a network of
Catholic churches and schools and dominated the Catholic clergy for decades. Anti-Irish, anti-Catholic
nativist riots erupted in Philadelphia in 1844. The rise in population of the surrounding districts helped lead to the
Act of Consolidation of 1854, which extended the city limits from the of
Center City to the roughly of
Philadelphia County. In the latter half of the 19th century and leading into the 20th century, immigrants from Russia, Eastern Europe, and Italy, and African Americans from the
southern U.S. settled in the city. Philadelphia was represented by the
Washington Grays in the
American Civil War. The African-American population of Philadelphia increased from 31,699 to 219,559 between 1880 and 1930, largely stemming from the
Great Migration from the
South.
20th century By the 20th century, Philadelphia had an entrenched
Republican political machine and a complacent population. In 1910,
a general strike shut down the entire city. In 1917, following outrage over the election-year murder of a Philadelphia police officer, the
City Council shrank from two houses to just one. In July 1919, Philadelphia was one of more than 36 industrial cities nationally to suffer a
race riot during
Red Summer in post-
World War I unrest as recent immigrants competed with Black residents for jobs. In the 1920s, the public flouting of
Prohibition laws,
organized crime, mob violence, and corrupt police involvement in illegal activities led to the appointment of
Brig. Gen. Smedley Butler of the
U.S. Marine Corps as the city's director of public safety, but political pressure still prevented long-term success in fighting crime and corruption. In 1940,
non-Hispanic whites constituted 86.8% of the city's population. In 1950, the population peaked at more than two million residents, then began to decline with the restructuring of industry that led to the loss of many middle-class union jobs. In addition, suburbanization enticed many affluent residents to depart the city for its outlying railroad commuting towns and newer housing. The resulting reduction in Philadelphia's tax base and the resources of local government caused the city to struggle through a long period of adjustment, and it approached bankruptcy by the late 1980s. In 1985, the
Philadelphia Police Department, utilizing a
Pennsylvania State Police helicopter,
bombed the
Cobbs Creek neighborhood to execute arrest warrants on
MOVE members, a
Black liberation movement.
The incident killed 11 people, destroyed 61 homes, and displaced 250 residents, marking one of the only times a US city intentionally bombed its own civilians. Revitalization and
gentrification of neighborhoods began in the late 1970s and continues into the 21st century with much of the development occurring in the
Center City and
University City neighborhoods. But this expanded a shortage of
affordable housing in the city. After many manufacturers and businesses left Philadelphia or shut down, the city started attracting service businesses and began to market itself more aggressively as a tourist destination. Contemporary glass-and-granite
skyscrapers were built in Center City beginning in the 1980s. Historic areas such as
Old City and
Society Hill were renovated during the reformist mayoral era of the 1950s through the 1980s, making both areas among the most desirable Center City neighborhoods. Immigrants from around the world began to enter the U.S. through Philadelphia as their gateway, leading to a reversal of the city's population decline between 1950 and 2000, during which it lost about 25 percent of its residents.
21st century Philadelphia eventually began experiencing a growth in its population in 2007, which continued with incremental annual increases through the present. A migration pattern has been established from New York City to Philadelphia by residents opting for a large city with relative proximity and a lower
cost of living. ==Geography==